I have this on both my road bike and mountain bike:
WTB Rocket V Pro SE Saddle
Before that I worn out 2 Sella Italia Flite Ti Saddles, I used to like it alot because it's light yet comfortable, I still have one of these on one of my mtbs but the WTB is just little heavier yet much more comfortable. I thought about getting another WTB saddle but I just don't want to throw away a perfect Flite Ti.